Óscar Pérez Rojas (born 1 February 1973) is a Mexican former professional footballer who played as a goalkeeper.

In 2001, he helped steer Cruz Azul all the way to the final of the Copa Libertadores, a historic run for a Mexican club in the competition.

With Pérez in goal, Cruz Azul was able to eliminate teams like Cerro Porteño, River Plate and Rosario Central, before playing Boca Juniors in the two-legged final.

[13] Following the tournament, Pérez announced he planned on playing professionally for six more months, effectively postponing his retirement until after the 2017–18 Liga MX season.

[14] On 27 July, at the age of 46, he announced his retirement from football effective immediately after Cruz Azul's second round match of the Torneo Apertura 2019 against Toluca.

[19] Once Javier Aguirre left the national team, Ricardo La Volpe became coach, and Oswaldo Sánchez took over his spot.

[20] In October 2017, Pérez helped found Asociación Mexicana de Futbolistas (Mexican Footballers Association).